Elevator derrick bolt

Abstract

The elevator derrick bolt comprises a threaded guide shaft used for supporting, a bolt pressing plate is fixedly arranged at the center of the upper end face of the threaded guide shaft, and a limiting rotating groove is formed in the center of the inner end face of the bolt pressing plate. When an elevator shaft workpiece is limited, the threaded guide shaft and the outer hexagon nut can stably limit the workpiece, meanwhile, the threaded rotating shaft can be in threaded connection with the threaded sliding sleeve, and then the threaded sliding sleeve can drive the butt-joint sliding block and the limiting rotating sleeve to conduct secondary reverse locking limiting on the bottom of the outer hexagon nut. According to the anti-slip device, the anti-slip gasket and the fixing gasket are arranged, the follow-up outer hexagon nut is prevented from slipping off under vibration of an elevator shaft, the stability of locking the elevator shaft workpiece by equipment is effectively improved, meanwhile, the anti-slip gasket and the fixing gasket are made of elastic materials, the protection performance of the workpiece after limiting can be improved, and the anti-seismic performance of the workpiece after locking can also be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt equipment, in particular to an elevator shaft bolt. Background Art

[0002] Elevator derrick bolts specifically refer to bolts used to connect and fix elevator derricks. They generate preload by tightening nuts, tightly connecting the various parts of the derrick together to prevent the elevator from shaking or shifting during operation. Elevator derrick bolts are crucial components in the elevator system and can ensure the safe and stable operation of the elevator.

[0003] For example, the utility model patent disclosed in publication number CN220748771U discloses an anti-loosening bolt for an elevator, comprising a screw and a bolt head, wherein an anti-loosening mechanism is provided within the screw and the bolt head. The anti-loosening mechanism comprises a rotating rod, a rotating block, a baffle, a slider, a first compression spring, and a positioning assembly. A groove is formed at the bottom end of the screw, two baffles are located within the groove, two slide grooves are formed on either side of the inner wall of the groove, two sliders are fixedly connected to either side of the baffle, the sliders are connected to the inner cavity of the slide groove, the first compression spring is located within the slide groove, a positioning groove is formed at the top end of the bolt head, a positioning assembly is located within the positioning groove, and one end of the rotating rod is fixedly connected to the rotating block. The utility model utilizes a coordinated arrangement of the rotating rod, the rotating block, the baffle, the slider, the first compression spring, and the positioning assembly to lock a nut on the screw, making the screw and nut inseparable, thereby effectively preventing the risk of the bolt loosening after long-term vibration.

[0004] Although the above-mentioned bolts can lock and limit the elevator accessories, the stability of the nut and bolt joint limitation is insufficient. At the same time, the overall seismic performance of the above-mentioned bolts and nuts is still insufficient. Therefore, an elevator derrick bolt is urgently needed to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an elevator shaft bolt to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an elevator shaft bolt, comprising a threaded guide shaft for support, a bolt pressure plate fixedly provided at the center of the upper end surface of the threaded guide shaft, a limited rotation groove provided at the center of the inner end surface of the bolt pressure plate, and a fixed washer fixedly provided at the center of the lower end surface of the bolt pressure plate.

[0007] Fixed guide grooves, wherein the fixed guide grooves are provided in six groups, and the six groups of fixed guide grooves are all opened on the inner end surface of the threaded guide shaft;

[0008] An inner hexagonal rotating plate, the inner hexagonal rotating plate is rotatably clamped on the inner end surface of the bolt pressure plate, and a threaded rotating shaft is fixedly provided at the center of the lower end surface of the inner hexagonal rotating plate;

[0009] A limiting device is slidably connected to the outer end surface of the threaded guide shaft through the fixed guide groove.

[0010] Preferably, the limiting device includes an external hexagonal nut, the upper end face of the external hexagonal nut is fixedly provided with a non-slip gasket for protection, and a limiting slot is equidistantly provided on the lower end face of the external hexagonal nut, the lower end face of the external hexagonal nut is movably clamped with a fixed clamping ring, and a fixed clamping block is equidistantly provided on the upper end face of the fixed clamping ring, the lower end face of the fixed clamping ring is rotatably clamped with a limiting sleeve, and six groups of docking sliders are equidistantly provided on the inner end face of the limiting sleeve, and the inner end faces of the six groups of limiting sleeves are fixedly provided with threaded sleeves.

[0011] Preferably, the fixed clamping ring is adapted to the limiting slot through the fixed clamping block and is then fixedly clamped to the bottom of the external hexagonal nut. The sliding insertion of the fixed clamping block and the limiting slot can effectively improve the stability of the subsequent limiting of the external hexagonal nut by the fixed clamping ring after it is locked, and prevent the subsequent external hexagonal nut from sliding.

[0012] Preferably, a limiting groove is provided on the upper end surface of the limiting rotating sleeve, and the fixed clamping ring is rotated and clamped on the inner end surface of the limiting rotating sleeve through the limiting groove, which can effectively improve the stability of the subsequent fixed clamping ring in the upper part of the limiting rotating sleeve. At the same time, the rotational clamping connection between the fixed clamping ring and the limiting rotating sleeve can also facilitate the subsequent docking of the fixed clamping block with the limiting slot.

[0013] Preferably, the threaded sleeve is threadedly connected to the threaded shaft, and the limiting sleeve is adapted to the fixed guide groove through the docking slider and then slidably engaged with the outer end surface of the threaded guide shaft. The fixed guide groove can provide sufficient guiding basis for the docking slider, thereby improving the stability of the subsequent up and down displacement of the limiting sleeve on the outside of the threaded guide shaft.

[0014] Preferably, the inner hexagonal rotating plate is rotated and clamped on the inner end face of the bolt pressure plate through the limit rotating groove, and the outer hexagonal nut is threadedly connected to the threaded guide shaft. The inner hexagonal rotating plate is set in an inverted T shape, which can provide sufficient limiting basis for subsequent rotation and clamping inside the limit rotating groove, thereby improving the stability of subsequent transmission.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. When the utility model limits the workpiece in the elevator shaft, the threaded guide shaft and the external hexagonal nut can stably limit the workpiece. At the same time, the threaded rotating shaft can be connected with the threaded sleeve through a thread, so that the threaded sleeve can drive the docking slider and the limiting rotating sleeve to perform a secondary reverse locking and limiting on the bottom of the external hexagonal nut, preventing the subsequent external hexagonal nut from slipping under the vibration of the elevator shaft, effectively improving the stability of the equipment in locking the workpiece in the elevator shaft. At the same time, the anti-slip gasket and the fixed gasket are made of elastic material, which can not only improve the protection of the workpiece after limiting, but also effectively improve the seismic performance of the workpiece after locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the main body of the utility model;

[0018] Figure 2 It is a structural diagram of the main body of the utility model;

[0019] Figure 3 This is an exploded view of the limiting device of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the limiting device of the present utility model.

[0021] In the figure: 1-threaded shaft, 2-limiting device, 3-hexagonal rotating plate, 4-bolt pressure plate, 5-limiting rotating groove, 6-fixing gasket, 7-threaded guide shaft, 8-fixing guide groove, 21-anti-slip gasket, 22-hexagonal nut, 23-fixing clamping ring, 24-limiting rotating sleeve, 25-threaded sliding sleeve, 26-docking slider, 27-fixing block, 28-limiting slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides an embodiment of an elevator shaft bolt, comprising a threaded guide shaft 7 for support, a bolt pressure plate 4 fixedly provided at the center of the upper end surface of the threaded guide shaft 7, a limited rotation groove 5 provided at the center of the inner end surface of the bolt pressure plate 4, and a fixed washer 6 fixedly provided at the center of the lower end surface of the bolt pressure plate 4.

[0024] The fixed guide grooves 8 are provided with six groups in total, and the six groups of fixed guide grooves 8 are all opened on the inner end surface of the threaded guide shaft 7;

[0025] The hexagonal rotating plate 3 is rotatably clamped on the inner end surface of the bolt pressure plate 4, and a threaded rotating shaft 1 is fixedly provided at the center of the lower end surface of the hexagonal rotating plate 3;

[0026] The limiting device 2 is slidably connected to the outer end surface of the threaded guide shaft 7 through the fixed guide groove 8.

[0027] The limiting device 2 includes an external hexagonal nut 22, the upper end face of which is fixedly provided with an anti-slip gasket 21 for protection, and a limiting slot 28 is equidistantly provided on the lower end face of the external hexagonal nut 22, a fixed clamping ring 23 is movably clamped on the lower end face of the external hexagonal nut 22, and a fixed clamping block 27 is equidistantly provided on the upper end face of the fixed clamping ring 23, the lower end face of the fixed clamping ring 23 is rotatably clamped with a limiting rotating sleeve 24, and six groups of docking sliders 26 are equidistantly provided on the inner end face of the limiting rotating sleeve 24, and a threaded sliding sleeve 25 is fixedly provided on the inner end face of the six groups of limiting rotating sleeves 24.

[0028] The fixed clamping ring 23 is adapted to the limiting slot 28 through the fixed clamping block 27 and is fixedly connected to the bottom of the external hexagonal nut 22. The sliding insertion of the fixed clamping block 27 and the limiting slot 28 can effectively improve the stability of the subsequent limiting of the fixed clamping ring 23 after locking the external hexagonal nut 22, and prevent the subsequent external hexagonal nut 22 from sliding.

[0029] A limiting groove is provided on the upper end surface of the limiting rotating sleeve 24, and the fixed clamping ring 23 is rotated and clamped on the inner end surface of the limiting rotating sleeve 24 through the limiting groove, which can effectively improve the stability of the subsequent fixed clamping ring 23 in the upper part of the limiting rotating sleeve 24. At the same time, the rotational clamping connection between the fixed clamping ring 23 and the limiting rotating sleeve 24 can also facilitate the subsequent docking of the fixed clamping block 27 and the limiting slot 28.

[0030] The threaded sleeve 25 is threadedly connected to the threaded shaft 1, and the limiting sleeve 24 is adapted to the fixed guide groove 8 through the docking slider 26 and then slidably engaged with the outer end surface of the threaded guide shaft 7. The fixed guide groove 8 can provide sufficient guiding basis for the docking slider 26, thereby improving the stability of the subsequent up and down displacement of the limiting sleeve 24 outside the threaded guide shaft 7.

[0031] The inner hexagonal rotating plate 3 is rotated and clamped on the inner end surface of the bolt pressure plate 4 through the limiting rotating groove 5, and the outer hexagonal nut 22 is threadedly connected to the threaded guide shaft 7. The inner hexagonal rotating plate 3 is set in an inverted T shape, which can provide sufficient limiting basis for subsequent rotation and clamping inside the limiting rotating groove 5, thereby improving the stability of subsequent transmission.

[0032] Working principle: Before use, the staff can align the workpiece to be limited to the mounting hole of the elevator shaft, and then pass the bolt pressure plate 4 through the threaded guide shaft 7 to pass through the elevator workpiece and the mounting hole of the elevator shaft, and first use the outer hexagonal nut 22 to threadably connect with the bottom of the threaded guide shaft 7 on the other side. After the docking is completed, the outer hexagonal nut 22 and the threaded guide shaft 7 can lock the workpiece in the elevator shaft. Then the staff can dock the limiting sleeve 24 to the inside of the fixed guide groove 8 through the docking slider 26, and dock the threaded sleeve 25 with the threaded shaft 1. At this time, the staff can rotate the inner hexagonal rotating plate 3, and the inner hexagonal rotating plate 3 can drive the threaded shaft 1 to rotate, so that the threaded shaft 1 can be threadedly connected with the threaded sleeve 25, and then drive the fixed clamping ring 23 to move up, so that the fixed block 27 is limited to the bottom of the limiting slot 28, preventing the subsequent outer hexagonal nut 22 from sliding, effectively improving the stability of locking the workpiece.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator shaft bolt, comprising a threaded guide shaft (7) for support, a bolt pressure plate (4) fixedly provided at the center of the upper end surface of the threaded guide shaft (7), a limited rotation groove (5) provided at the center of the inner end surface of the bolt pressure plate (4), and a fixed washer (6) fixedly provided at the center of the lower end surface of the bolt pressure plate (4), characterized in that: Fixed guide grooves (8), wherein the fixed guide grooves (8) are provided in six groups, and the six groups of fixed guide grooves (8) are all opened on the inner end surface of the threaded guide shaft (7); An inner hexagonal rotating plate (3), the inner hexagonal rotating plate (3) is rotatably clamped on the inner end surface of the bolt pressure plate (4), and a threaded rotating shaft (1) is fixedly provided at the center of the lower end surface of the inner hexagonal rotating plate (3); A limiting device (2) is slidably connected to the outer end surface of the threaded guide shaft (7) through the fixed guide groove (8).

2. The elevator shaft bolt according to claim 1, characterized in that: The limiting device (2) comprises an external hexagonal nut (22), the upper end surface of the external hexagonal nut (22) is fixedly provided with an anti-slip gasket (21) for protection, and a limiting slot (28) is equidistantly provided on the lower end surface of the external hexagonal nut (22), the lower end surface of the external hexagonal nut (22) is movably clamped with a fixed clamping ring (23), and a fixed clamping block (27) is equidistantly provided on the upper end surface of the fixed clamping ring (23), the lower end surface of the fixed clamping ring (23) is rotatably clamped with a limiting rotating sleeve (24), and six groups of docking sliders (26) are equidistantly provided on the inner end surface of the limiting rotating sleeve (24), and the inner end surfaces of the six groups of the limiting rotating sleeves (24) are fixedly provided with threaded sliding sleeves (25).

3. The elevator shaft bolt according to claim 2, characterized in that: The fixing collar (23) is adapted to the limiting slot (28) through the fixing block (27) and is fixedly connected to the bottom of the external hexagonal nut (22).

4. The elevator shaft bolt according to claim 2, characterized in that: The upper end surface of the limiting rotating sleeve (24) is provided with a limiting groove, and the fixed clamping ring (23) passes through the limiting groove and is then rotated and clamped on the inner end surface of the limiting rotating sleeve (24).

5. The elevator shaft bolt according to claim 2, characterized in that: The threaded sleeve (25) is threadedly connected to the threaded shaft (1), and the limiting sleeve (24) is adapted to the fixed guide groove (8) through the docking slider (26) and then slidably engaged with the outer end surface of the threaded guide shaft (7).

6. The elevator shaft bolt according to claim 2, characterized in that: The inner hexagonal rotating plate (3) is rotated and clamped on the inner end surface of the bolt pressure plate (4) through the limiting rotating groove (5), and the outer hexagonal nut (22) is threadedly connected to the threaded guide shaft (7).

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